Mizere ya Gasi ya Pansi pa Dziko - Chitoliro cha Chitsulo cha X65 SSAW

Kufotokozera Kwachidule:

Tikubweretsa chitoliro chathu chachitsulo cha SSAW chatsopano, chinthu chapamwamba kwambiri chopangidwira ntchito zosiyanasiyana, makamaka mapaipi a gasi achilengedwe apansi panthaka. Chitoliro cha mzere cha X65 SSAW ichi chimagwiritsidwa ntchito kwambiri polumikiza mapaipi oyendera madzi, zomangamanga zachitsulo, maziko a milu, ndi zina zotero. Chifukwa cha magwiridwe antchito ake abwino komanso kulimba kwake, chinthuchi chimaonedwa kuti ndi chofunikira kwambiri pamafakitale osiyanasiyana ndi mapulojekiti omanga.


Tsatanetsatane wa Zamalonda

Ma tag a Zamalonda

Chitoliro cholumikizidwa ndi arc chozungulira ndi gawo lofunika kwambiri pa uinjiniya wopereka madzi, mafakitale a petrochemical, makampani opanga mankhwala, makampani opanga magetsi, ulimi wothirira, komanso zomangamanga m'mizinda. Kusinthasintha kwake komanso kudalirika kwake kwapangitsa kuti chikhale chimodzi mwa zinthu makumi awiri zofunika kwambiri zomwe zapangidwa mdziko lathu, zomwe zikuwonetsa kufunika kwake komanso momwe chimakhudzira mafakitale osiyanasiyana.

Chitoliro chachitsulo cha SSAWYapangidwa mwapadera kuti inyamule zakumwa ndipo ndi yoyenera kwambiri pamakina operekera madzi ndi madzi otayira madzi. Kapangidwe kake kolimba kamapangitsa kuti ikhale yoyenera kuonetsetsa kuti madzi amasamutsidwa bwino komanso modalirika. Kuphatikiza apo, ndi yoyeneranso kunyamula mpweya monga gasi wa malasha, nthunzi, ndi gasi wamafuta osungunuka. Mphamvu yake yolimba komanso kukana dzimbiri kumatsimikizira kuti mpweya umatumizidwa bwino komanso motetezeka komanso mogwira mtima ndipo ikukwaniritsa zofunikira kwambiri pamakina operekera mpweya.

Katundu Waukulu Wachilengedwe ndi Wamankhwala a Mapaipi Achitsulo (GB/T3091-2008, GB/T9711-2011 ndi API Spec 5L)

       

Muyezo

Kalasi yachitsulo

Zinthu Zamankhwala (%)

Katundu Wolimba

Mayeso a Charpy (V notch) Impact

c Mn p s Si

Zina

Mphamvu Yopereka (Mpa)

Mphamvu Yokoka (Mpa)

(L0=5.65 √ S0)Mphindi Yotambasula (%)

kuchuluka kuchuluka kuchuluka kuchuluka kuchuluka mphindi kuchuluka mphindi kuchuluka D ≤ 168.33mm D > 168.3mm

GB/T3091 -2008

Q215A ≤ 0.15 0.25 < 1.20 0.045 0.050 0.35

Kuwonjezera Nb\V\Ti motsatira GB/T1591-94

215   335   15 > 31  
Q215B ≤ 0.15 0.25-0.55 0.045 0.045 0.035 215 335 15 > 31
Q235A ≤ 0.22 0.30 < 0.65 0.045 0.050 0.035 235 375 15 >26
Q235B ≤ 0.20 0.30 ≤ 1.80 0.045 0.045 0.035 235 375 15 >26
Q295A 0.16 0.80-1.50 0.045 0.045 0.55 295 390 13 >23
Q295B 0.16 0.80-1.50 0.045 0.040 0.55 295 390 13 >23
Q345A 0.20 1.00-1.60 0.045 0.045 0.55 345 510 13 >21
Q345B 0.20 1.00-1.60 0.045 0.040 0.55 345 510 13 >21

GB/T9711-2011(PSL1)

L175 0.21 0.60 0.030 0.030  

Ngati mukufuna kuwonjezera chimodzi mwa zinthu za Nb\V\Ti kapena kuphatikiza kulikonse kwa izo

175   310  

27

Chimodzi kapena ziwiri mwa zizindikiro za kulimba kwa mphamvu ya impact ndi malo odulira zingasankhidwe. Pa L555, onani muyezo.

L210 0.22 0.90 0.030 0.030 210 335

25

L245 0.26 1.20 0.030 0.030 245 415

21

L290 0.26 1.30 0.030 0.030 290 415

21

L320 0.26 1.40 0.030 0.030 320 435

20

L360 0.26 1.40 0.030 0.030 360 460

19

L390 0.26 1.40 0.030 0.030 390 390

18

L415 0.26 1.40 0.030 0.030 415 520

17

L450 0.26 1.45 0.030 0.030 450 535

17

L485 0.26 1.65 0.030 0.030 485 570

16

API 5L (PSL 1)

A25 0.21 0.60 0.030 0.030  

Pa chitsulo cha giredi B, Nb+V ≤ 0.03%; pa chitsulo ≥ giredi B, kuwonjezera Nb kapena V kapena kuphatikiza kwawo, ndi Nb+V+Ti ≤ 0.15%

172   310  

(L0=50.8mm)kuti ziwerengedwe motsatira njira iyi:e=1944·A0 .2/U0 .0 A: Dera la chitsanzo mu mm2 U: Mphamvu yochepa yokhazikika mu Mpa

Palibe mphamvu iliyonse kapena zonse ziwiri zomwe zimafunika pa mphamvu yokhudza kuuma kwa chitoliro ndi malo odulira ubweya.

A 0.22 0.90 0.030 0.030   207 331
B 0.26 1.20 0.030 0.030   241 414
X42 0.26 1.30 0.030 0.030   290 414
X46 0.26 1.40 0.030 0.030   317 434
X52 0.26 1.40 0.030 0.030   359 455
X56 0.26 1.40 0.030 0.030   386 490
X60 0.26 1.40 0.030 0.030   414 517
X65 0.26 1.45 0.030 0.030   448 531
X70 0.26 1.65 0.030 0.030   483 565

Chimodzi mwa zinthu zazikulu zomwe zimagwiritsidwa ntchito popanga mapaipi athu achitsulo ozungulira omwe ali ndi arc welded ndimzere wa mafuta pansi pa nthakaNdi khalidwe lake lapamwamba komanso magwiridwe antchito, ndi chisankho choyamba chomanga maukonde odalirika komanso otetezeka oyendera gasi wachilengedwe.

Chitoliro cha Madzi cha Pansi pa Dziko

Chitoliro cha mzere wa X65 SSAWYapangidwa ndi zipangizo zapamwamba kwambiri zomwe zimaonetsetsa kuti ndi yolimba komanso yolimba. Izi zimapangitsa kuti ikhale yoyenera kugwiritsidwa ntchito pofunikira mphamvu yayikulu komanso kukana zinthu zachilengedwe. Kuyenerera kwake kuyika pansi pa nthaka kukuwonetsanso kapangidwe kake kolimba komanso kuthekera kopirira zovuta, zomwe zimapangitsa kuti ikhale yankho losankhidwa bwino pamapulojekiti a mapaipi a gasi pansi pa nthaka.

Monga chinthu chodalirika komanso chotsimikizika, mapaipi athu achitsulo olumikizidwa ndi arc omwe amazungulira amagwiritsidwa ntchito kwambiri m'mafakitale ndi mapulojekiti a zomangamanga chifukwa cha magwiridwe antchito awo apamwamba, kulimba komanso kudalirika. Kapangidwe kake kapamwamba kamapangitsa kuti ikhale chisankho choyamba pamachitidwe oyendera madzi ndi gasi, makamaka m'mizere ya gasi yapansi panthaka komwe chitetezo ndi magwiridwe antchito ndizofunikira kwambiri.

Mwachidule, chitoliro chachitsulo cholumikizidwa ndi arc chozungulira ndi chinthu chabwino kwambiri chopangidwa kuti chikwaniritse zosowa zosiyanasiyana za njira zotumizira madzi ndi gasi. Chifukwa cha kusinthasintha kwake komanso kudalirika kwake, chakhala gawo lalikulu m'mafakitale osiyanasiyana ndi mapulojekiti omanga, makamaka mzere wa gasi pansi pa nthaka. Ubwino wake wapadera komanso magwiridwe antchito ake zimapangitsa kuti chikhale chuma chamtengo wapatali pakutsimikizira netiweki yoyendera gasi yogwira ntchito bwino komanso yotetezeka. Khulupirirani kudalirika ndi magwiridwe antchito a mapaipi athu achitsulo olumikizidwa ndi arc chozungulira kuti mukwaniritse zosowa zanu zonse zoyendera madzi ndi gasi.

 


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